Stoichiometry Practice

Front

What is stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the balanced chemical equations.

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement in chemistry that represents 6.022 x 10²³ particles (atoms, molecules, ions, etc.) of a substance.

Front

How do you determine the mole ratio from a balanced chemical equation?

Back

The mole ratio is determined by the coefficients of the reactants and products in a balanced chemical equation.

Front

What is the balanced equation for the reaction of magnesium with hydrochloric acid?

Back

Mg + 2HCl → MgCl₂ + H₂

Front

If 2 moles of NaOH react with 1 mole of H₂SO₄, how many moles of Na₂SO₄ are produced?

Back

1 mole of Na₂SO₄ is produced.

Front

What is the significance of coefficients in a balanced chemical equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction.

Front

How many grams of Na₂SO₄ are produced from 200 grams of NaOH?

Back

297.65 g Na₂SO₄ are produced.

Front

What is the molar mass of carbon (C)?

Back

The molar mass of carbon is 12.01 g/mol.

Front

How many grams of carbon are needed to react with 8 moles of SiO₂?

Back

96 g of carbon are needed.

Front

What is the mole ratio of Mg to Fe in the reaction 3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe?

Back

The mole ratio of Mg to Fe is 3 mol Mg / 2 mol Fe.